A place for in-depth discussion of math, science, orbital mechanics and rocketry relating to KSP, and any other questions you might need help with! Whether you are brand new to the game or an old pro, improve yourself and help others by asking questions and finding answers. Text post only!

I could come up with several reasons. for example, using a hybrid Ion / liquid fuel craft. I might want the ion engines at 50% thrust to save on power + add thrust while keeping my liquid engine at 100%.

Increase the thrust of booster engines without blowing out your main engine from overheating...

basicly any craft that uses more than one type of propulsion this would be usefull. Some craft that even use the same type. Such as a lander that has low TWR. Set some engines at 100% to slow the craft, and keep it stable, while adjusting other engines to trully effect decent speed.

I could keep going. Is it requiered, no. would most people use it... probably still no. would it be a great tool for people that would use it, hells to the yea.